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SoundOff
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Re: CO2 Powered siren

Mon May 01, 2017 6:19 am

https://www.youtube.com/watch?v=_DQ74fkUZ5k

If you hear it sound, you have ~30 seconds to evacuate the room before the main discharge
"Calling Out To All"

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Model L
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Re: CO2 Powered siren

Mon May 01, 2017 7:52 pm

why does it work better with c02 than with just air. Higher pressure?
Resident of Beaverton, Oregon
Proud owner of 2 Model L's and a 1984 WS-3000 serial # 717
19 years old
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Chem_Boffin_6589
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Re: CO2 Powered siren

Mon May 01, 2017 8:17 pm

Model L wrote:
Mon May 01, 2017 7:52 pm
why does it work better with c02 than with just air. Higher pressure?
Different chemical properties.
Alfie Woolard
Federal Signal MC know-it-all.
Installed, initiated and maintains school campus warning system.
https://www.youtube.com/channel/UCtGVVz ... 8BQ47VmdHg

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Daniel
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Re: CO2 Powered siren

Tue May 02, 2017 2:54 am

CO2 expands much faster than compressed air. That's why collectors often use it to blow steam whistles without a boiler.
Lex orandi, lex credendi, lex vivendi.

tony991
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Re: CO2 Powered siren

Sun Jun 11, 2017 1:09 am

I have a couple of CO2 sirens. Completely made of brass! I attached a couple of photos of them.
Attachments
10171690_10200827213921403_9049780212060096608_n.jpg
10171690_10200827213921403_9049780212060096608_n.jpg (87.1 KiB) Viewed 5242 times
10168152_10200827213281387_3385866204242304518_n.jpg
10168152_10200827213281387_3385866204242304518_n.jpg (99.2 KiB) Viewed 5242 times

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